1、MIL-B-48589 12 W 7799906 O4317b T W c93 MIL-B-48589 (MU) 31 December 1975 MILITARY SPECIFICATION MIL-0-13830 MIL-F-13926 MIL-P-14232 MIL-1-45607 BODY ASSEMBLY: 11747350 (DAY LIGHT) This specification is approved for use by all Departments and agencies of the Department of Defense. 1. SCOPE 1.1 This
2、specification covers a modular unit of the Tank Gunners M32E1 Periscope, herein referred to as Body Assembly (see 6.1). 2. APPLTCABLE DOCUMENTS 2.1 The following documents, of the issue in effect on date of invi- tation for bids or request for proposals, form a part of this specification to the exte
3、nt specified herein. SPECIFICATIONS Military Optical Components for Fire Control Instruments: General Specification Governing the Manufacture, Assembly and Inspection of Fire Control Materiel; General Speci- fication Governing the Manufacture and Inspection of Parts, Equipment and Tools for Army Mat
4、eriel, Packaging and Packing of Inspection Equipment, Acquisition, Maintenance and Disposition of STANDARDS Military MIL-STD-105 MIL- S TD-1 O9 MIL-STD-810 Sampling Procedures and Tables for Inspection by Attributes Quality Assurance Terms and Definitions Environmental Test Methods DRAWINGS U.S. Arm
5、y, Frankford Arsenal F85 65 55 6 Pressure Tester, Two-Station FSC 1240 u- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-c MIL-6-48587 12 777770b 0433787 3 5 mL-B-48589 (MU) F11732109 Gage Interchangeability, Maximum F11732110 Gage Interchangeabilit
6、y, Minimum F11747350 Body Assembly PACKAGING DATA SHEET PS11747350 Packaging of Body Assembly 11747350 (Copies of specifications, standards, drawings and packaging data sheets required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as
7、 directed by the contracting officer.) 3. REQUIREMENTS 3.1 Fabrication.- The body assembly shall be manufactured in accordance with Drawing F11747350 and drawings pertaining thereto, 3.2 1nterchangeability.- The body assembly shall be capable of insertion into and removal from Periscope: M32E1 (gage
8、s are specified in lieu of periscope in 4.6.7.16) . 3.3 General specification.- The contractor shall be responsible for adherence to, and compliance with the kollowing requirements of MIL-F-13926. a. Order of precedence b. Dimensions and tolerances c. Inorganic protective surface finishes d. Part id
9、entification and marking e. Workmanchip c 3.4 Environmental. 3.4.1 Storage temperature.- The body assembly shall show no evidence of cement separation, glass breakage or other physical failure, and shall meet all the requirements of this specification at standard ambient temperature, plus 60“ to plu
10、s 90“ Fahrenheit (F), after having been exposed and ther- mally stabilized at temperatures of minus 80“ and plus 160F. 3.4.2 Operating temperatures.- The body assembly shall meet the applic- able requirements of 3.5 while exposed and thermally stabilized at tempera- tures of minus 40 and plus 150“ F
11、. 3.4.3 Vibration “A“.- Vibratiqn shall be applied along each of three mutually perpendicular axes of the body assembly. sinusoidal as follows: The vibration shall be a. At a frequency of 5 Hertz (Hz), the acceleration shall be .65 G (peak). b. During a frequency sweep of 5 to 9 Hz, increase acceler
12、ation linearly from .65 to 1.5 Gs (peak). 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-8587 12 7779906 0431788 3 I MIL-B-48589 (MU) c. During a frequency sweep of 9 to 500 Hz, maintain constant ac- celeration of 1.5 Gs (peak). d. During a
13、frequency sweep of 500 to 9 Hz, maintain constant ac- celeration of 1.5 Gs (peak). e. During a frequency sweep of 9 to 5 Hz, decrease acceleration linearly from 1.5 GIs to .65 G (peak). f. At 5 Hz, the acceleration shall be .65 G (peak), The frequency of applied vibration shall be swept logarithmica
14、lly in 15 minute f lminute sweep cycles for a total of two hours per axis. The body assembly shall show no evidence of physical failure subsequent to vibration. requirements of 3.2 and 3.5 through 3.16 inclusive. Following the vibration test, the body assembly shall meet the 3,4.4 Vibration “B“.- Vi
15、bration shall be applied along each of three mutually perpendicular axes of the body assembly. sinusoidal as follows: The vibration shall be a. At a frequency of 5 Hertz (Hz), the acceleration shall be 1.0 G (peak). b. During a frequency sweep of 5 to 500 Hz, maintain constant acceleration of 1. O G
16、 (peak) . c. During a frequency sweep of 500 to 5 Hz, maintain constant acceleration of 1.0 G (peak). d. At 5 Hz, the acceleration shall be 1.0 G (peak). The frequency of applied vibration shall be swept logarithmically in 15 minute f lminute sweep cycles for a total of 15 minute f lminute along eac
17、h of the three mutually perpendicular axes (total vibration time 45 minutes (I 3 minutes). The body assembly shall show no evidence of phy- sical failure subsequent to vibration. Following the vibration test, the body assembly shall meet the requirements of 3.2 and 3.5 through 3.16 in- clusive. 3.4.
18、5 Shock.- The body assembly shall be subjected to 24 cumulative shocks consisting of three each at 100 Gs, then 40 Gs, appljed in each direction along each of the two mutually perpendicular horizontal axes (all four sides). lative shocks consisting of three each of 90 GIs, then 35 Gs applied in one
19、direction along the vertical axis (normal operating position of body assembly only). For 100 Gs f 10% and .90 GIs f 10% the shock pulse shall have a time duration of 3 f .2 milli-seconds; for 40 Gs f 10% the shock pulse shall have a time duration of 18 f 3 milliseconds. failure subsequent to shock.
20、shall meet the requirements of 3.2 and 3.5 through 3.16 inclusive. The body assembly shall also be subjected to six cumu- The shock pulse shall have a half sine wave. The body assembly shall show no evidence of physical Following the shock test, the body assembly 3 Provided by IHSNot for ResaleNo re
21、production or networking permitted without license from IHS-,-,-MIL-B-48589 12 M 9999906 04311787 5 MIL-B-48589 (MU) 3.5 Cleanliness. a. Defects.- There shall be no evidence of moisture, grease, fingerprints, condensates, fractures, and adhesive separations on any glass component when viewing throug
22、h either end. b. =.- When viewed through the eyepiece, there shall be no more than three dirt particles appearing within a 50 mil diameter central field of view. outside the specified field of view. The angular separation between dirt particles shall be at least 15 mils, Dirt particles smaller than
23、1/4 re- ticle line width shall be ignored regardless of distribution. any particle shall not exceed the apparent: width of the reticle line. There shall be no more than three dirt particles appearing The size of 3.6 Sealing;.- The body assembly shall show no evidence of leakage in excess of ob2 poun
24、ds per square inch (psi) when subjected to an internal pressure of 5. 5 0.10 psi for a minimum of 2 hours. of the accepted body assembly shall contain nitrogen having a dew point at least as low as minus 25F at atmospheric pressure. shall then be sealed with the dry nitrogen specified to an internal
25、 pressure of between 0.25 and 0.50 psig. The interior atmosphere The body assembly 3.7 Orientationb- The requirements of 3.8 to 3.14 inclusive shall be met with the eyepiece focused on the reticle surface. NOTE: The following references apply throughout this specification Reference Line “Yci, see Dr
26、awing F11747350 Datum Plane “X“ (Intersection of planes) 3.8 Parallax.- Parallax between the reticle and the image of a target at 1200 meters shall not exceed 0.1 mil as adjusted by Eccentric 8205635. 3.9 Collimation.- These requirements shall be met prior to meeting the requirements of 3.4.3 throug
27、h 3.4,5 inclusive. 3.9.1 Pre-Vibration/Pre-Shock setting.- An incident line of sight shall be provided which is perpendicular to Datum Plane “X“ within 0.20 mil. Coincidence of this line of sight with the instrument reticle shall be established by rotation of the boresight knobs. 3.9.2 Reticle movem
28、ent.- Reticle (boresight cross) movement shal be measured against an external target from the collimated setting of 3.9.1 to meet the requirements of 3.9.2.1 and 3.9.2.2, 3.9.2.1 Elevation.- Clockwise rotation of the elevation knob shall move the reticle, in a direction towards the knob, a minimum o
29、f 8.5 mils from the collimated setting. Counterclockwise rotation of the elevation knob shall move the reticle, in a direction away from the knob, a minimum of 5.5 mils from the colilimated setting. 4 P Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,
30、-MIL-B-Ll8589 32 W 9997906 0433770 L MIL-B-48589 (MU) 3.9.2.2 Deflection.- Clockwise rotation of the deflection knob shall move the reticle, in a direction towards the knob, a minimum of 7.0 mils from the collimated setting. Counterclockwise rotation of the deflection knob shall move the reticle, in
31、 a direction away from the knob, a minimum of 7.0 mils from the collimated setting. 3.9.3 Knob rotation.- Continuous movement of reticle shall be ;?vident until limited by positive engagement of clockwise and counterclockwise stops in each boresight knob. 3.9.4 Line of sight variation.- Variation in
32、 the line of sight in elevation, as the deflection knob is rotated by at least 7.0 mils in each direction from the position established in 3.9.1* shall not exceed 0.1 mil (total variation not to exceed 0.2 mil). 3.9.4.1 Reticle shift.- Disengagement or reversal of either knob shall not cause the lin
33、e of sight to shift by more than 0.1 mil in a direc- tion perpendicular to the intended motion. 3.9.5 Boresight backlash.- Backlash in each boresight mechanism shall not exceed 0.1 mil. 3* 9.6 Post-Vibration/Post-Shock collimation.- This requirement shall be met subsequent to meeting the requirement
34、s of 3.4.3 through 3.4.5 inclusive. The incident line of sight previously established shall coincide,within 0.1 mil (including fixture error), with the instrument reticle. 3.10 Image tilt.- The image of a target line which is originally perpendicular to the Reference Line “Yii shall emerge perpendic
35、ular to Reference Line “Yci within 1.0 degree of arc, 3.11 Parallelism of reticle.and image.- The image of a target line which is originally perpendicular to Reference Line “Y“ shall emerge parallel, within 30 minutes of arc to .the reticle line. 3.12 Objective focusing range.- Rotation of Eccentric
36、 8205635 shall cause the objective assembly to travel a minimum of 0.020 inch in each direction from the position established in 3.8. 3.13 Dioptra1 adjustment. 3.13.1 Zero settin- This requirement shall be met while observing the projected image through-a dioptometer set for zero diopter. diopter sc
37、ale shall indicate zero within 1/4 diopter when the reticle is brought into focus. The 3.13.2 Excursion range.- The diopter movement shall be adjustable through a minimum range of -3.0 to +3.0 diopters as read on the diopter scale 5 Provided by IHSNot for ResaleNo reproduction or networking permitte
38、d without license from IHS-,-,-MIL-B-48587 12 W 777770b 0431771 3 W MIL-B-48589 (MU) 3.13.3 Diopter backlash.- Backlash in the diopter movement shall not exceed 118 diopter as read on the diopter scale, 3.14 Resolution.- The resolution shall be 6.0 seconds of arc or Resolution consists of detectable
39、 line structure and Eyepiece focus shift between less when viewing with an auxiliary telescope having magnification of at least 3.0 power, proper line count in all four meridians. any two meridians shall not exceed 0.25 diopter, 3.15 Operability. 3.15.1 Disengapement of boresight knob locks.- The di
40、rect force required to disengage each boresight knob from the lock position shall be within the limits of 2.0 to 5.0 pounds (lbs) when checked at standard temperature. When checked at the temperature condition specified in 3.15-2 Rotation of boresight knobs.- The running torque required to rotate ea
41、ch boresight knob through the range specified in 3.9.3 shall be within the limits of 0.5 and 5.0 pound inches (lb-ins) when checked at standard temperature. in 3.4.2, the running torque shall not exceed 8.0 ins. When checked at the temperature condition specified 3.15.3 Diopter movement.- The runnin
42、g torque required to rotate the diopter movement through the range specified in 3.13.2 shall be within the limits of 1.5 and 6.9 lb-ins when checked at standard temperature. checked at the temperature conditions specified in 3.4.2, the running torque shall not exceed 15 lb-ins. When 3.15.4 Focusing
43、lock.- This requirement shall be met with 10 lb-ins torque applied to the locking screw on Housing 11727432. standard ambient temperature and the temperature conditions specified in 3.4.2, there shall be no rotation of Eccentric 8205635 when 48 ounce-inches (oz-ins) torque is applied to the eccentri
44、c. When checked at 3.15.5 Objective focusing mechanism.- This requirement shall be met with the locking screw backed off a minimum of two full revolutions from the locked position established in 3.15.4. The running torque required to rotate Eccentric 8205635 through a minimum of one full revolution
45、in each direction shall not exceed 30 oz-ins when checked at standard temperature. 3.4.2, the running torque shall not exceed 50 oz-ins. When checked at the temperature conditions specified in 3.16 Reticle illumination.- With a 24 volt direct current source energizing the reticle light, the marking
46、shall be visible when observed in a dark room. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection.- Unless otherwise specified in the contract or purchase order, the supplier is responsible for the per- formance of all inspection requirements as specified herein. Except as otherwise s
47、pecified, the supplier may utilize his own facilities or any other facilities suitable for the performance of the inspection require- 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-48587 22 7779706 0433772 5 M MIL-B-48589 (MU) ments specifie
48、d her.ein, unless disapproved by the Government. The Govern- ment reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.1.1 General provisions.- The compone
49、nt and subassembly inspection Definitions of inspection terms shall be as listed requirements of MIL-F-13926 form a part of the quality assurance provisions of this specification. in MIL-STD-109. 4.2 First article (initial production) approval.- The requirement or first article approval and the responsibility (Government or contractor) for first article testing shall be as specified in.the contract. sample for first article approval tests shall consi
